unofficial

/ ˌʌnəˈfɪʃəl /

adjective

1. not official or formal

   an unofficial engagement

2. not confirmed officially

   an unofficial report

3. (of a strike) not approved by the strikers' trade union

4. (of a medicinal drug) not listed in a pharmacopoeia

Other Word Forms

• unofficially adverb

Example Sentences

Some employees who were casual fans and had visited Claude started pushing for him to become an unofficial mascot.

Read more on Wall Street Journal

The Argentine peso took another beating last week, with the unofficial rate used to settle financial-asset transactions breaking through the government’s upper band of 1,500 pesos to the dollar.

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He was taken to an unofficial prison facility where other inmates were allegedly beaten and abused and was by himself in a small room when three masked men handed him a single sheet of paper.

Read more on BBC

If this year’s Rare Books L.A. had an unofficial theme, it was Dr. Frankenstein’s monster.

Read more on Los Angeles Times

Some even have unofficial bars which serve alcohol, which is banned in Saudi Arabia.

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Related Words

• informal 
• personal